Application of a Soil Water Hysteresis Model to Simple Water Retention Curves

摘要: The Parlange hysteresis model is reformulated as a pair of recurrence relations to provide relationships between wetting and drying phases any order. applied the classical van Genuchten for soil water retention used main curve. nonphysical behaviour these curves related existence point inflection in when it boundary. Where form curve, provides an ordinary differential equation describing A number simple analytical solutions, relating particular values parameters model, then forms In general, numerical integration required generate general model. cycling are still applicable, even curve only known numerically. new do not have points there no behaviour. experimental data Viaene et al. (1994)